My group absolutely loved our stay with Atcharee. In addition to the usual positive characteristics of good hosts (informative, helpful, relaxed, etc.), I highlight Atcharee is also very responsive - she will try to answer or address your questions minutes after you've sent it.
Regarding the property, it was clean, spacious, and well-air conditioned. It's perfect for large groups - be it a department offsite or a family / group holiday. The highlight was of course the pool - which we used at least twice a day. Nothing relaxes you more than lounging around in the pristine waters (Atcharee has a pool guy who cleans the water regularly) at night, surrounded by the garden and the gentle hum of crickets.
The location of the property was also great. Barring traffic jams, we were able to get to all of our activities / BKK airport quickly (20-25 minutes max). There's a 7-Eleven 5 minutes around the corner we found useful. And if you're hungry at night, there are some restaurants that serves great Thai food along the street at the end of the road - I've had the best Tom Yum Goong soups in my life in one of them.
Overall, I've had what I'd call a perfect stay, and my entire group was very impressed with the villa and Atcharee. If you have a large group and you're spending some time in Bangkok - look no further - Atcharee's villa is the one you should book.